I noticed some hi def boards are different colors than the one I have, which is blue. Is there any difference on the revisions besides the hdmi connector placement. Any pro or cons from one to another.

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So in the end, I'm not sure what caused the kit to not work on my initial NES, but i went and got another second hand NES and installed the kit into it and it works. Will carefully look over my old board to see what the heck could have gone wrong. Sadly, the interposers snapped in two when i was trying to remove them from the board so i had to pick up another kit, but that is not the fault of Kevtris or GameTech. More end-user fault so no hard feelings. I'm loving this thing now and can't wait to really play with it this evening instead of shoveling a foot of snow. (God bless the USPS for delivering the kit to me despite the blizzard warnings).

I've just completed my first install, but it's giving me some problems, although I'm not sure if it's due to the AV Famicom itself or the Hi-Def NES. I gave the console a quick test before proceeding with the install and it seemed to be working OK, but now I have an issue where it will boot maybe once in 20-30 attempts and I've no idea why. I did think it was perhaps just a dirty slot connector, but I've given it a thorough clean (it wasn't too bad anyway) and it still has issues. Another thing that makes me think the cart slot isn't the issue is that when it does boot, I'll turn the console off and on again straight away and it doesn't work.

I checked the CPU and PPU and they both seem to be H rev. and aren't laser marked. I'm also 99% sure the issue isn't with the install work, as it's probably the cleanest job I've ever done and when the console does boot, it works just fine.

In terms of investigating it, I just checked to see that the Hi-Def NES was receiving 9 volts which it is. I have noticed that when the console fails to boot, the orange LED on the Hi-Def NES is on constant low brightness and when it does boot it pulses and is far brighter (pic below is when it has booted).

Any ideas on what I can do to get it working reliably would be appreciated.

EDIT: Hmmm, I had ordered two boards and swapped the main board around and the second one works flawlessly every time. Have many people had issues with faulty Hi-Def NES boards? I'll try the one I've been having problems with in another console and see if the issue persists.

If your ppu is non rev that's prolly the issue, rev A pal ppu seems to be more compatible.I need to look to see if i have a non rev i can get to Kev for testing.

I have just opened up my third PAL NES and there was no REV A chip inside! So if you need a RP2C07-0 for testing let me know and I'll ship one over to you if it isn't too expensive(I checked, I think it will be cheap enough for me to forget about it).

game-tech.us wrote:

It's not just the red kits, it's certain PAL ppu chips, rp2c07-0 revs seem to be the worst. Adding a .1uF cap on the ppu clock pin to gnd seems to help a lot, but we'll get Kevtris to look at it closer.

I was recently reading this and saw in the notes section about how the clock cycles differ between NTSC and PAL CPU/PPUs...

Quote:

* On NTSC systems, the PPU divides the master clock by 4 while the CPU uses the master clock divided by 12. Since both clocks are fed off the same master clock, this means that there are exactly three PPU ticks per CPU cycle, with no drifting over time (though the clock alignment might vary depending on when you press the Reset button).* On PAL systems, the PPU divides the master clock by 5 while the CPU uses the master clock divided by 16. As a result, there are exactly 3.2 PPU ticks per CPU cycle.

Forgive me for asking, but does the Hi-Def NES account for the different CPU & PPU clock cycles for a PAL system? I'm assuming it does, but thought I would ask.

In videos from the NT Mini, it seems those Hi Def NES boards have more features and options than the stand alone boards. Has there been any word from Kevtris on when he'll be releasing a firmware update to bring parity between the two?

In videos from the NT Mini, it seems those Hi Def NES boards have more features and options than the stand alone boards. Has there been any word from Kevtris on when he'll be releasing a firmware update to bring parity between the two?

That's because the Nt Mini doesn't use a Hi-Def NES board at all. The whole system is based on a bigger, more expensive FPGA.

Kevtris has said that the smaller FPGA used by the Hi-Def NES kit is already maxed out, so there's no way to bring the current boards to parity. He's also said he has no intention of making the kits with a more expensive FPGA. So other than bug fixes or the unlikely possibility of removing old features, we'll have to be happy with what we've got.

In videos from the NT Mini, it seems those Hi Def NES boards have more features and options than the stand alone boards. Has there been any word from Kevtris on when he'll be releasing a firmware update to bring parity between the two?

That's because the Nt Mini doesn't use a Hi-Def NES board at all. The whole system is based on a bigger, more expensive FPGA.

Kevtris has said that the smaller FPGA used by the Hi-Def NES kit is already maxed out, so there's no way to bring the current boards to parity. He's also said he has no intention of making the kits with a more expensive FPGA. So other than bug fixes or the unlikely possibility of removing old features, we'll have to be happy with what we've got.

I'd like to have a couple of the FirebrandX palettes, the RGBSource "Hybrid" palette, and the Sony/Consumer/CXA2025AS palette. I'd be willing to give up the black and white palette if there isn't room.

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